1,2,3,4-Tetrachlorobenzene, 1000µg/mL in Isooctane, 1ml Back Catalog number: 3750.6-K-IO Manufacturer: CHIRON AS Availability: 3 weeks Price on request - + Recommended 19031 EPA Method 507 - Internal Standard Price on request P-094S Chlorpyrifos, 100µg/mL in MeOH, 1ml Price on request 11423.13-K-ME Ranitidine hydrochloride,1000 µg base/mL,MeOH,1mL, Price on request